Hosta plant named ‘Tropical Dancer’

ABSTRACT

A new and distinct cultivar of  Hosta  plant named ‘Tropical Dancer’, characterized by its broadly spreading foliage with upright flower scapes, widely-margined light yellow and green variegated foliage, violet-colored flowers that are positioned above the foliage on strong scapes, and good garden performance.

Latin name of genus and species of plant claimed: Hosta hybrid (Tratt.).

Variety denomination: ‘Tropical Dancer’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Hosta plant botanically known as Hosta hybrid and hereinafter referred to by the cultivar name ‘Tropical Dancer’.

The new Hosta cultivar is a naturally-occurring sport of ‘Spring Fling’, not patented, characterized by its green heart-shaped leaves with a wavy, creamy white margin. The new cultivar was discovered as a whole plant and selected during July 2004 in a controlled environment at Barneveld, The Netherlands.

Asexual reproduction of the new Hosta by division and tissue culture in a controlled environment in Barneveld, The Netherlands since 2004, has shown that the unique features of this new Hosta are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The following characteristics of the new cultivar have been repeatedly observed and can be used to distinguish ‘Tropical Dancer’ as a new and distinct cultivar of Hosta plant:

-   -   1. Broadly spreading foliage with upright flower scapes;     -   2. Widely-margined light yellow and green variegated foliage;     -   3. Violet-colored flowers that are positioned above the foliage         on strong scapes; and     -   4. Good garden performance.

Of the many commercially available Hosta cultivars, the most similar in comparison to the new cultivar is the parent cultivar ‘Spring Fling’, not patented. However, in side by side comparisons, plants of the new cultivar differ from its parent, in leaf color and width of the leaf margin.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying photographs show, as nearly true as it is reasonably possible to make the same in color illustrations of this type, typical flower and foliage characteristics of the new cultivar. Colors in the photographs differ slightly from the color values cited in the detailed description, which accurately describes the colors of ‘Tropical Dancer’. The plants were grown outdoors in 3 liter containers for approximately 1 year in Barneveld, The Netherlands.

The photograph on the first sheet is a side perspective view of typical plants of ‘Tropical Dancer’ grown in an outdoor nursery.

The photograph at the top of the second sheet is a close-up view of a typical leaf of ‘Tropical Dancer’.

The photograph at the bottom of the second sheet is a close-up view of a typical inflorescence of ‘Tropical Dancer’.

DETAILED BOTANICAL DESCRIPTION

The new cultivar has not been observed under all possible environmental conditions to date. Accordingly, it is possible that the phenotype may vary somewhat with variations in the environment, such as temperature, light intensity, and day length, without, however, any variance in genotype.

The chart used in the identification of colors described herein is The R.H.S. Colour Chart of The Royal Horticultural Society, London, England, 2001 edition, except where general color terms of ordinary significance are used. The color values were determined in June 2008 under natural light conditions in Barneveld, The Netherlands when day temperatures ranged from 12° C. to 31° C. (53° F. to 88° F.) and night temperatures ranged from 4° C. to 16° C. (39° F. to 61° F.).

Plants used in the following description were grown in Barneveld, The Netherlands, in an outdoor nursery in 3 liter containers and under conditions which closely approximate commercial production conditions. The plants were grown for approximately 1 year when the description was taken. Measurements and numerical values represent averages of typical plants.

-   Botanical classification: Hosta hybrid cultivar Tropical Dancer. -   Parentage: Naturally-occurring sport of Hosta hybrid ‘Spring Fling’,     not patented. -   Propagation:     -   -   Type.—In vitro propagation utilizing typical methods for             Hosta is preferred, garden division is also possible.         -   Time to initiate roots.—Approximately 20 days at a             temperature of approximately 15° C.         -   Time to produce a rooted plant.—Approximately 50 days at a             temperature of approximately 15° C.         -   Root description.—Medium thickness, fibrous; creamy white in             color.         -   Rooting habit.—Moderately branching, moderate density. -   Plant description:     -   -   Growth habit and general appearance.—Herbaceous flowering             perennial plant. Broadly spreading foliage with upright             flower scapes. Flowering stems and leaves basal rosettes;             moderately vigorous growth habit. Violet-colored flowers are             positioned above the foliage on strong scapes.         -   Crop time.—Approximately 20 weeks from tissue culture             plantlets to finish in an 11 cm container.         -   Size.—Plant height (soil level to top of foliar plane):             Approximately 29.7 cm. Plant height (soil level to top of             inflorescences): Approximately 75.2 cm. Plant width             (spread): Approximately 69.4 cm. -   Foliage description:     -   -   General description.—Leaves basal, simple with approximately             7 per basal rosette, generally symmetrical and             long-persisting.         -   Leaves.—Shape: Ovate to slightly carinate. Appearance:             Slightly glossy. Apex: Apiculate. Base: Obtuse to attenuate.             Margin: Entire, very wavy. Length: Approximately 26.6 cm.             Width: Approximately 14.2 cm. Texture of upper and lower             surfaces: Smooth, glabrous; furrowed on venation. Venation             pattern: Camptodrome. Color of upper surface of young             foliage: 144A with a lighter margin of 144C. Color of lower             surface of young foliage: 147C with a lighter margin of             147D. Color of upper surface of mature foliage: 137A and             143A with margins of 4C to 4D. Color of lower surface of             mature foliage: 191B with margins of 150D to 2D. Color of             upper and lower surfaces of venation: Indistinguishable from             leaf color.         -   Petiole.—Length: Approximately 23.4 cm. Diameter:             Approximately 61.4 cm. Texture of upper and lower surfaces:             Smooth, glabrous. Color of upper and lower surfaces: 137C             with margins of 155A to 157D. -   Flowering description:     -   -   Natural flowering season.—Continuously flowering from June             into August in Barneveld, The Netherlands.         -   Lastingness of individual flower on the plant.—Approximately             5 days, not persistent. -   Inflorescence description:     -   -   General description.—Terminal racemes with flowers facing             outward or slightly downward. Freely flowering habit with             about 32 flowers developing per inflorescence. Fragrance:             None detected. Inflorescence height: Approximately 28.5 cm.             Inflorescence diameter: Approximately 10.2 cm.         -   Peduncles (scapes).—Strength: Strong. Length: Approximately             27.7 cm. Diameter: Approximately 4.0 mm. Angle: Erect.             Texture: Smooth, glabrous. Color: 143A to 144A. -   Flower description:     -   -   Type.—Campanulate, single.         -   Flower buds.—Rate of opening: Per flowering stem,             approximately 8% of the flowers open together with all             flowers per inflorescence opening within approximately 4             weeks. Shape: Oblanceolate. Length: Approximately 3.2 cm.             Diameter: Approximately 9.0 mm. Color: 85D.         -   Perianth.—Depth: Approximately 4.5 cm. Diameter:             Approximately 3.8 cm.         -   Tepals.—Quantity: 6, arranged in a single whorl of three             narrow tepals and 3 wider tepals, fused at base with upper             50% free. Shape: Oblanceolate. Appearance: Dull. Margin:             Entire. Apex: Acute. Length: Approximately 4.2 cm. Width of             narrow tepals: Approximately 9.0 mm. Width of wider tepals:             Approximately 1.3 cm. Texture of upper and lower surfaces:             Smooth, glabrous. Color of upper (inner) surface when first             and fully open: Purer white than 155D with stripes of 85D to             lighter than 85D. Color of lower (outer) surface when first             open: Almost pure white with stripes of 85D and lighter than             85D. Color of lower (outer) surface when fully open: Almost             pure white with stripes of 85D and lighter than 85D, fading             to N155C with senescence.         -   Bracts.—Quantity: One per flower at the base of the pedicel.             Length: Approximately 2.9 cm. Width: Approximately 1.0 mm.             Shape: Narrowly ovate, concave. Apex: Narrow acute. Base:             Cuneate. Margin: Entire. Texture, upper and lower surfaces:             Smooth, glabrous. Color, upper and lower surfaces: 144B to             144C.         -   Pedicels.—Length: Approximately 9.0 mm. Diameter:             Approximately 1.0 mm. Angle: Approximately 60° from             vertical. Strength: Strong. Texture: Smooth, glabrous.             Color: 146A.         -   Reproductive organs.—Androceium: Quantity per flower:             Typically six; anthers dorsifixed. Filament length:             Approximately 4.1 cm, curled. Filament color: 157A. Anther             shape: Narrowly oblong. Anther length: Approximately 4.0 mm.             Anther color: N187A. Pollen amount: Sparse. Pollen color:             12B. Gynoecium: Pistils: Quantity per flower: One. Pistil             length: Approximately 4.1 cm. Stigma shape: Crested. Stigma             color: 155C. Style length: Approximately 4.0 cm. Style             color: 155D tinged with N157A to 145B at base. Ovary color:             145A. -   Seed and fruit production: Seed and fruit development have not been     observed. -   Disease and pest resistance: Plants of the new Hosta have not been     noted to be resistant to pathogens and pests common to Hosta. -   Garden performance: Plants of the new Hosta have been observed to     have good garden performance and tolerate rain, wind and high     temperatures of about 35° C. (95° F.). Plants of the new Hosta have     been observed to be hardy to a least USDA Zone 5. 

1. A new and distinct cultivar of Hosta plant named ‘Tropical Dancer’, substantially as herein shown and described. 